Tp-Link TL-SG2424 [48/130] Q vlan
![Tp-Link TL-SG2424 [48/130] Q vlan](/views2/1042108/page48/bg30.png)
6.1 802.1Q VLAN
VLAN tags in the packets are necessary for the switch to identify packets of different VLANs. The
switch works at the data link layer in OSI model and it can identify the data link layer encapsulation
of the packet only, so you can add the VLAN tag field into the data link layer encapsulation for
identification.
In 1999, IEEE issues the IEEE 802.1Q protocol to standardize VLAN implementation, defining the
structure of VLAN-tagged packets. IEEE 802.1Q protocol defines that a 4-byte VLAN tag is
encapsulated after the destination MAC address and source MAC address to show the information
about VLAN.
As shown in the following figure, a VLAN tag contains four fields, including TPID (Tag Protocol
Identifier), Priority, CFI (Canonical Format Indicator), and VLAN ID.
Figure 6-2 Format of VLAN Tag
(1) TPID: TPID is a 16-bit field, indicating that this data frame is VLAN-tagged. By default, it is
0x8100 in this switch.
(2) Priority: Priority is a 3-bit field, referring to 802.1p priority. Refer to section “QoS & QoS
profile” for details.
(3) CFI: CFI is a 1-bit field, indicating whether the MAC address is encapsulated in the
standard format in different transmission media. This field is not described in detail in this
chapter.
(4) VLAN ID: VLAN ID is a 12-bit field, indicating the ID of the VLAN to which this packet
belongs. It is in the range of 0 to 4,095. Generally, 0 and 4,095 is not used, so the field is in
the range of 1 to 4,094.
VLAN ID identifies the VLAN to which a packet belongs. When the switch receives an
un-VLAN-tagged packet, it will encapsulate a VLAN tag with the default VLAN ID of the inbound
port for the packet, and the packet will be assigned to the default VLAN of the inbound port for
transmission.
In this User Guide, the tagged packet refers to the packet with VLAN tag whereas the untagged
packet refers to the packet without VLAN tag, and the priority-tagged packet refers to the packet
with VLAN tag whose VLAN ID is 0.
Link Types of ports
When creating the 802.1Q VLAN, you should set the link type for the port according to its
connected device. The link types of port including the following three types:
(1) ACCESS: The ACCESS port can be added in a single VLAN, and the egress rule of the
port is UNTAG. The PVID is same as the current VLAN ID. If the ACCESS port is added to
another VLAN, it will be removed from the current VLAN automatically.
(2) TRUNK: The TRUNK port can be added in multiple VLANs, and the egress rule of the port
is TAG. The TRUNK port is generally used to connect the
cascaded network devices for it
can receive and forward the packets of multiple VLANs. When the packets are forwarded
by the TRUNK port, its VLAN tag will not be changed.
41
Содержание
- Gigabit smart switch 1
- Tl sg2216 tl sg2424 1
- Ce mark warning 2
- Copyright trademarks 2
- Fcc statement 2
- Safety notices 2
- Package contents 8
- Chapter 1 about this guide 9
- Conventions 9
- Intended readers 9
- Overview of this guide 9
- Appearance description 12
- Chapter 2 introduction 12
- Front panel 12
- Main features 12
- Overview of the switch 12
- Rear panel 13
- Chapter 3 login to the switch 15
- Configuration 15
- Chapter 4 system 17
- System info 17
- System summary 17
- Device description 19
- System time 19
- Daylight saving time 20
- System ip 21
- User manage 22
- User table 22
- User config 23
- Config restore 24
- System tools 24
- Config backup 25
- Firmware upgrade 25
- System reboot 26
- System reset 26
- Access control 27
- Access security 27
- Chapter 5 switching 29
- Port config 29
- Port mirror 30
- The following entries are displayed on this screen 31
- Port security 32
- Port isolation 34
- Lag table 35
- Static lag 36
- Traffic monitor 37
- Traffic summary 37
- Traffic statistics 39
- Mac address 40
- Address table 41
- Static address 42
- Dynamic address 43
- Filtering address 45
- Chapter 6 vlan 47
- Q vlan 48
- Vlan config 50
- Port config 52
- Configuration procedure 53
- Application example for 802 q vlan 54
- Chapter 7 spanning tree 56
- Stp config 61
- Port config 63
- Stp summary 63
- Mstp instance 65
- Region config 65
- Instance config 66
- Instance port config 67
- Global configuration procedure for spanning tree function 69
- Port protect 69
- Stp security 69
- Application example for stp function 72
- Tc protect 72
- Chapter 8 multicast 76
- Igmp snooping 78
- Snooping config 79
- Port config 80
- Vlan config 81
- Configuration procedure 83
- Multicast vlan 83
- Application example for multicast vlan 85
- Configuration procedure 85
- Multicast filter 86
- Ip range 87
- Port filter 87
- Configuration procedure 89
- Packet statistics 89
- Chapter 9 qos 91
- Diffserv 94
- Port priority 94
- Configuration procedure 95
- Schedule mode 95
- Configuration procedure 96
- Dscp priority 96
- P priority 96
- Configuration procedure 97
- Bandwidth control 98
- Rate limit 98
- Storm control 99
- Chapter 10 snmp 101
- Global config 103
- Snmp config 103
- Snmp group 104
- Snmp view 104
- Snmp user 106
- Snmp community 107
- Configuration procedure 109
- Notification 110
- History control 112
- Alarm config 113
- Event config 113
- Chapter 11 maintenance 116
- Cpu monitor 116
- System monitor 116
- Memory monitor 117
- Log table 118
- Local log 119
- Remote log 119
- Backup log 120
- Cable test 121
- Device diagnose 121
- Loopback 122
- Network diagnose 122
- Tracert 123
- Appendix a specifications 125
- Appendix b configuring the pcs 126
- Appendix c glossary 128
Похожие устройства
- Sony CDX-GT457UE Инструкция по эксплуатации
- Sony HDR-CX690E Инструкция по эксплуатации
- Tp-Link TL-SG2216 Инструкция по эксплуатации
- Beko CE 58100 Инструкция по эксплуатации
- Sony CDX-GT650UI Инструкция по эксплуатации
- Sony HDR-CX560VE Инструкция по эксплуатации
- Tp-Link TL-SL2210WEB Инструкция по эксплуатации
- Panasonic TC-14SV2 Инструкция по эксплуатации
- Sony CDX-GT747 UI Инструкция по эксплуатации
- Sony HDR-CX560E Инструкция по эксплуатации
- Tp-Link TL-SL2218WEB Инструкция по эксплуатации
- Panasonic KX-FPC96 Инструкция по эксплуатации
- Sony DSX-S100 Инструкция по эксплуатации
- Sony HDR-CX550VE Инструкция по эксплуатации
- Tp-Link TL-SL2428WEB Инструкция по эксплуатации
- Sony XSGTX121LC Инструкция по эксплуатации
- Toshiba GR-H59TR Инструкция по эксплуатации
- Tp-Link TL-SL2452WEB Инструкция по эксплуатации
- Sony HDR-CX550E Инструкция по эксплуатации
- Acer Aspire V3-551-10466G50Makk Инструкция по эксплуатации